252503523138 has 8 divisors (see below), whose sum is σ = 505007046288. Its totient is φ = 84167841044.

The previous prime is 252503523137. The next prime is 252503523149. The reversal of 252503523138 is 831325305252.

It is a sphenic number, since it is the product of 3 distinct primes.

252503523138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 252503523096 and 252503523105.

It is not an unprimeable number, because it can be changed into a prime (252503523137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21041960256 + ... + 21041960267.

It is an arithmetic number, because the mean of its divisors is an integer number (63125880786).

Almost surely, 2^252503523138 is an apocalyptic number.

252503523138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252503523138 is a wasteful number, since it uses less digits than its factorization.

252503523138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42083920528.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 252503523138 in words is "two hundred fifty-two billion, five hundred three million, five hundred twenty-three thousand, one hundred thirty-eight".